sent you a number to try. Did you register both passes with the same email address? I have a feeling if using the same email address it causes problems.
I meant if you are coming to Thailand, the flights will likely be okay but there is a potential that if the UK is redlisted you will have to do 14 day quarantine at a hotel with a number of tests which can be pricey
there is an option to add pdfs at the end of the application. I don't actually remember having to upload insurance policy. I think it just asked for Policy number and when it starts from.
I sent you a DM. Maybe just call the number I sent and give your passport number. It looks like you used an agent and they probably have filed it and hoping it comes through. Check the message I sent you